With the alternator running at rated terminal voltage Vt, at rated current Ia = 1 per unit. What happens if load current is reduced to zero, if it was operating at lagging power factor?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7a.png"><img alt="The alternator at rated terminal voltage Vt at rated current Ia = 1 per unit - option a" class="alignnone size-full wp-image-124451" height="232" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7a.png" width="140"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7b.png"><img alt="The alternator at rated terminal voltage Vt at rated current Ia = 1 per unit - option b" class="alignnone size-full wp-image-124452" height="191" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7b.png" width="124"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7c.png"><img alt="The alternator at rated terminal voltage Vt at rated current Ia = 1 per unit - option c" class="alignnone size-full wp-image-124453" height="247" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7c.png" width="177"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7d.png"><img alt="The alternator at rated terminal voltage Vt at rated current Ia = 1 per unit - option d" class="alignnone size-full wp-image-124454" height="189" src="https://www.sanfoundry.com/wp-content/uploads/2016/05/op-7d.png" width="162"/></a>